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Date: 8 Apr 2002 23:39:01 -0000
Message-ID: <20020408233901.60089.qmail@icarus.apache.org>
From: morgand@apache.org
To: jakarta-commons-cvs@apache.org
Subject: cvs commit:
 jakarta-commons/collections/src/test/org/apache/commons/collections
 TestIteratorChain.java

morgand     02/04/08 16:39:01

  Added:       collections/src/test/org/apache/commons/collections
                        TestIteratorChain.java
  Log:
  An IteratorChain is a sequence of Iterators called until all Iterators are
  exhausted
  
  Revision  Changes    Path
  1.1                  jakarta-commons/collections/src/test/org/apache/commons/collections/TestIteratorChain.java
  
  Index: TestIteratorChain.java
  ===================================================================
  /*
   * $Header: /home/cvs/jakarta-commons/collections/src/test/org/apache/commons/collections/TestIteratorChain.java,v 1.1 2002/04/08 23:39:01 morgand Exp $
   * $Revision: 1.1 $
   * $Date: 2002/04/08 23:39:01 $
   *
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Commons", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.commons.collections;
  
  import junit.framework.*;
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import java.util.NoSuchElementException;
  
  /**
   * Tests the ArrayIterator to ensure that the next() method will actually
   * perform the iteration rather than the hasNext() method.
   * The code of this test was supplied by Mauricio S. Moura
   * 
   * @author James Strachan
   * @author Mauricio S. Moura
   * @author Morgan Delagrange
   * @version $Id: TestIteratorChain.java,v 1.1 2002/04/08 23:39:01 morgand Exp $
   */
  public class TestIteratorChain extends TestIterator {
  
      protected String[] testArray = {
          "One", "Two", "Three", "Four", "Five", "Six"
      };
  
      protected List list1 = null;
      protected List list2 = null;
      protected List list3 = null;
  
      public static Test suite() {
          return new TestSuite(TestIteratorChain.class);
      }
  
      public TestIteratorChain(String testName) {
          super(testName);
      }
  
      public void setUp() {
          list1 = new ArrayList();
          list1.add("One");
          list1.add("Two");
          list1.add("Three");
          list2 = new ArrayList();
          list2.add("Four");
          list3 = new ArrayList();
          list3.add("Five");
          list3.add("Six");        
      }
  
      public Iterator makeEmptyIterator() {
          ArrayList list = new ArrayList();
          return new IteratorChain(list.iterator());
      }
  
      public Iterator makeFullIterator() {
          IteratorChain chain = new IteratorChain();
  
          Iterator i = list1.iterator();
  
          chain.addIterator(list1.iterator());
          chain.addIterator(list2.iterator());
          chain.addIterator(list3.iterator());
          return chain;
      }
  
      /**
       * Return a new, empty {@link Object} to used for testing.
       */
      public Object makeObject() {
          return makeFullIterator();
      }
  
      public void testIterator() {
          Iterator iter = (Iterator) makeFullIterator();
          for ( int i = 0; i < testArray.length; i++ ) {
              Object testValue = testArray[i];            
              Object iterValue = iter.next();
  
              assertEquals( "Iteration value is correct", testValue, iterValue );
          }
  
          assertTrue("Iterator should now be empty", ! iter.hasNext() );
  
          try {
              Object testValue = iter.next();
          } catch (Exception e) {
              assertTrue("NoSuchElementException must be thrown", 
                         e.getClass().equals((new NoSuchElementException()).getClass()));
          }
      }
  
      public void testRemove() {
          Iterator iter = (Iterator) makeFullIterator();
  
          try {
              iter.remove();
              fail("Calling remove before the first call to next() should throw an exception");
          } catch (IllegalStateException e) {
  
          }
  
          for ( int i = 0; i < testArray.length; i++ ) {
              Object testValue = testArray[i];            
              Object iterValue = iter.next();
  
              assertEquals( "Iteration value is correct", testValue, iterValue );
  
              if (! iterValue.equals("Four")) {
                  iter.remove();
              }
          }
  
          assertTrue("List is empty",list1.size() == 0);
          assertTrue("List is empty",list2.size() == 1);
          assertTrue("List is empty",list3.size() == 0);
      }
  
  }
  
  
  
  

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